Dualism - If true:

   If everything is not physical then something more must exist and it must be non-physical.

   If ‘something more’ does exist then physical things could possibly interact with it and could therefore transcend their natural physical course.

   For choice to exist the Chooser needs to be able to control these interactions. Since purely physical things are only results, human beings would require ‘something more’ to allow them to control the interactions; otherwise they would be purely physical and lack the possibility of choice.

   Observably, human beings possess a physical body and if ‘choice’ is real they also possess a ‘more’. So then, a being without a human ‘more’ must not be fully human; and likewise if a physical body does possess a human ‘more’ it would be fully human.

   However, the only way we can so far determine whether a physical body possess a ‘more’, (which would be non-physical), is to observe the interactions between the two things. So then, a non-physical ‘more’ could exist before and after the physical aspect is present for interactions.

   For the example of organ donation it is widely accepted that consent must be given by the person to have a part of their body put under the control of a different person. Without consent it would be considered an invasion for a person to use their ‘more’ to interact onto another person’s unique body. [A unique body may be determined by a unique genetic code or a unique physical spatial presence; (e.g. clones).] If individual choice exists then each individual must possess a unique connection between a ‘more’ and their unique physical body.

   Therefore, if ‘choice’ exists a human being would be described as the possible existence of a ‘more’ that is associated with a unique genetic (or spatial) physical presence.